JP2008008548A - Electric water heater - Google Patents

Electric water heater Download PDF

Info

Publication number
JP2008008548A
JP2008008548A JP2006179407A JP2006179407A JP2008008548A JP 2008008548 A JP2008008548 A JP 2008008548A JP 2006179407 A JP2006179407 A JP 2006179407A JP 2006179407 A JP2006179407 A JP 2006179407A JP 2008008548 A JP2008008548 A JP 2008008548A
Authority
JP
Japan
Prior art keywords
boiling
outside air
air temperature
heating
water heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2006179407A
Other languages
Japanese (ja)
Inventor
Kunihito Nagakura
邦仁 長倉
Koji Ito
浩二 伊藤
Kenji Matsumura
賢治 松村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Appliances Inc
Original Assignee
Hitachi Appliances Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Appliances Inc filed Critical Hitachi Appliances Inc
Priority to JP2006179407A priority Critical patent/JP2008008548A/en
Publication of JP2008008548A publication Critical patent/JP2008008548A/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric water heater capable of improving COP (coefficient of performance) and reducing running costs by successively controlling increase and decrease of heating output to achieve optimum heating-up heating output. <P>SOLUTION: This electric water heater comprises a heating-up control means for detecting changing situations of an outside air temperature and a water supply temperature of late night hours for several past days, estimating the changing situations of the outside air temperature and the water supply temperature after a starting time point of the heating-up operation from the detected changing situations of the outside air temperature and the water supply temperature, and determining a distribution pattern of necessary heating output from the heating-up load of an operation day. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えば、季節別時間帯別電灯契約の深夜時間帯内で沸上運転を行う電気給湯機に関し、特に、逐次最適な沸き上げ加熱出力になるように加熱出力の増減制御を行うことにより、ＣＯＰ（成績係数）の向上とランニングコストの低減を図ることができる電気給湯機に関するものである。   The present invention relates to, for example, an electric water heater that performs a boiling operation within a midnight time zone of a lighting contract according to a time zone according to a season, and in particular, performs increase / decrease control of the heating output so as to obtain an optimum boiling heating output sequentially. Thus, the present invention relates to an electric water heater that can improve COP (coefficient of performance) and reduce running costs.

例えば、従来のタンクユニットとヒートポンプユニットに別れているヒートポンプ式電気給湯機では、ヒートポンプユニットの沸き上げ加熱能力は一般地用の４．５ｋＷと寒冷地用の６．０ｋＷの２種類が設定されている。
設定値以外の沸き上げ加熱出力を発生させる例として、お風呂の追焚き運転の場合や、外気温度が極端に高い時や低い時に圧縮機等の機器を保護する目的として、沸き上げの加熱出力を段階的に高めたり低めたりするものが知られているが、ＣＯＰの向上を目的として、設定値以外の沸き上げ加熱出力を発生させる運転方法はない。 For example, in a heat pump type electric water heater that is divided into a conventional tank unit and a heat pump unit, two types of heating capacity of the heat pump unit are set to 4.5 kW for general land and 6.0 kW for cold region. Yes.
As an example of generating boiling heating output other than the set value, when heating the bath, or when the outside air temperature is extremely high or low, the heating output for boiling is used to protect equipment such as a compressor. However, there is no operation method for generating a boiling heating output other than the set value for the purpose of improving COP.

また、季節別時間帯別電灯契約の場合、ヒートポンプが運転する時間は、主に深夜時間帯に沸上運転させた方がランニングコストを低減することができる。
さらに、ヒートポンプのＣＯＰを向上させ、かつランニングコストを低減させるためには、深夜時間帯において外気温度が比較的高い内に加熱出力を引き上げて沸き上げ、外気温度が低い朝方には加熱出力を引き下げて運転した方がＣＯＰの向上に有利である。 In addition, in the case of the electric lamp contract by season, the running cost can be reduced by operating the heat pump mainly in the late night hours.
Furthermore, in order to improve the COP of the heat pump and reduce the running cost, the heating output is raised while the outside air temperature is relatively high during the midnight hours, and the heating output is lowered in the morning when the outside air temperature is low. It is advantageous to improve the COP.

また、ヒートポンプの運転終了時間を深夜時間帯の終了時間（例えば、午前６：５９）として、貯湯タンク全量を沸き上げ状態にすれば、外気温度が低いそれ以外の時間帯の加熱出力を引き下げられる限り引き下げて運転することができ、ＣＯＰを悪化させないことが可能である。   In addition, if the heat pump operation end time is set to the end time of the midnight time zone (for example, 6:59 am) and the entire amount of the hot water storage tank is brought to a boiling state, the heating output in other time zones where the outside air temperature is low can be lowered. It can be operated as far as possible, and COP can be kept from deteriorating.

しかしながら、現行の電気給湯機の沸き上げ終了時間は、目標（例えば、午前７：００）に対して、周囲環境条件（外気温度の低下や除霜時間）による安全率を設けているため、おおよそ３０分から１時間３０分ほど前に沸き上げを終了しており、貯湯タンクからの放熱ロスを生じてＣＯＰ悪化の要因になっていた。   However, the current boiling end time of an electric water heater is approximately the target factor (for example, 7:00 am) because a safety factor is set according to the ambient environment conditions (decrease in outside air temperature and defrosting time). The boiling was completed about 30 minutes to 1 hour and 30 minutes ago, causing a heat radiation loss from the hot water storage tank and causing COP deterioration.

本発明は、上記従来の電気給湯機が有する問題点に鑑み、逐次最適な沸き上げ加熱出力になるように加熱出力の増減制御を行うことにより、ＣＯＰの向上とランニングコストの低減を図ることができる電気給湯機を提供することを目的とする。   In view of the problems of the conventional electric water heaters described above, the present invention can improve COP and reduce running costs by controlling heating output increase / decrease so as to obtain an optimal boiling heating output. An object is to provide an electric water heater that can be used.

上記目的を達成するため、本発明の電気給湯機は、貯湯タンクの水を加熱する加熱手段を備え、深夜電力により沸き上げた湯を貯湯タンクに蓄えるようにした電気給湯機において、過去数日分の深夜時間帯の外気温度と給水温度の変化状況を検出し、該検出した外気温度と給水温度の変化状況から沸上運転の開始時点以降の外気温度と給水温度の変化状況を予測し、運転当日の沸き上げ負荷から必要加熱出力の配分パターンを算定する沸上制御手段を備えたことを特徴とする。   In order to achieve the above object, the electric water heater of the present invention is provided with a heating means for heating the water in the hot water storage tank, and the hot water boiled by midnight power is stored in the hot water storage tank in the past few days. Detecting changes in the outside air temperature and the feed water temperature during the midnight time of minutes, predicting the change in the outside air temperature and the feed water temperature after the start of the boiling operation from the detected change in the outside air temperature and the feed water temperature, A boiling-up control means for calculating a distribution pattern of the required heating output from the boiling load on the day of operation is provided.

この場合において、沸上制御手段が、外気温度が高い時は加熱出力を引き上げて沸上運転を行い、外気温度が低い時は加熱出力を引き下げて沸上運転を行うことができる。   In this case, the boiling control means can perform the boiling operation by raising the heating output when the outside air temperature is high, and can perform the boiling operation by reducing the heating output when the outside air temperature is low.

また、沸上制御手段が、深夜時間帯の終了直前に沸上不足分を沸き上げることができる。   Further, the boiling control means can boil up the boiling shortage immediately before the end of the midnight time zone.

また、貯湯タンクを大気に開放することができる。   In addition, the hot water storage tank can be opened to the atmosphere.

また、加熱手段としてヒートポンプを用いることができる。   Moreover, a heat pump can be used as a heating means.

本発明の電気給湯機によれば、貯湯タンクの水を加熱する加熱手段を備え、深夜電力により沸き上げた湯を貯湯タンクに蓄えるようにした電気給湯機において、過去数日分の深夜時間帯の外気温度と給水温度の変化状況を検出し、該検出した外気温度と給水温度の変化状況から沸上運転の開始時点以降の外気温度と給水温度の変化状況を予測し、運転当日の沸き上げ負荷から必要加熱出力の配分パターンを算定する沸上制御手段を備えることから、運転当日の沸き上げ負荷から加熱出力の配分パターンを算定し、深夜時間帯が終わる朝方に沸き上げが終わるように、逐次最適な沸き上げ加熱出力になるように加熱出力の増減制御を行うことができ、これにより、ＣＯＰの向上とランニングコストの低減を図ることができる。   According to the electric water heater of the present invention, in the electric water heater provided with heating means for heating the water in the hot water storage tank and storing hot water boiled by midnight power in the hot water storage tank, the midnight time zone for the past several days The change of the outside air temperature and the feed water temperature is detected, the change state of the outside air temperature and the feed water temperature after the start of the boiling operation is predicted from the detected change state of the outside air temperature and the feed water temperature, and the boiling on the day of operation is raised. With the boiling control means that calculates the required heating output distribution pattern from the load, the heating output distribution pattern is calculated from the heating load on the day of operation, so that boiling ends in the morning when the midnight hours end, The increase / decrease control of the heating output can be performed so as to obtain the optimum boiling heating output successively, thereby improving the COP and reducing the running cost.

この場合、沸上制御手段が、外気温度が高い時は加熱出力を引き上げて沸上運転を行い、外気温度が低い時は加熱出力を引き下げて沸上運転を行うことにより、給水温度が高い内に加熱出力を引き上げて沸き上げ、給水温度が低い朝方には加熱出力を引き下げて運転することができ、これにより、ＣＯＰの向上とランニングコストの低減を図ることができる。   In this case, when the outside air temperature is high, the boiling control means raises the heating output to perform the boiling operation, and when the outside air temperature is low, the heating output is lowered to perform the boiling operation, so that the feed water temperature is high. In the morning when the feed water temperature is low, operation can be performed with the heating output lowered, thereby improving COP and reducing running costs.

また、沸上制御手段が、深夜時間帯の終了直前に沸上不足分を沸き上げることにより、外気温度が低いそれ以外の時間帯の加熱出力を引き下げられる限り引き下げて運転することができる。   Also, the boiling control means can raise the heating shortage at other times when the outside air temperature is low by raising the boiling shortage immediately before the end of the midnight time zone, so that the heating output can be lowered.

また、貯湯タンクを大気に開放することにより、貯湯タンク内に圧力を掛けないシステムにも適用することができる。   Further, the present invention can be applied to a system in which no pressure is applied to the hot water storage tank by opening the hot water storage tank to the atmosphere.

また、加熱手段としてヒートポンプを用いることにより、ヒータ加熱に比較して電気を節約することができる。   Further, by using a heat pump as the heating means, electricity can be saved compared to heater heating.

以下、本発明の電気給湯機の実施の形態を、図面に基づいて説明する。
この電気給湯機は、図２に示すように、円筒状の貯湯タンク１と、該貯湯タンク１の下部に設けられた給水管２と、貯湯タンク１の上部に設けられた給湯管３と、貯湯タンク１の水を加熱するヒートポンプ４とを備え、深夜電力により沸き上げた湯を貯湯タンク１に蓄えるようにしている。
そして、この電気給湯機は、過去数日分（特に限定されるものではないが、例えば、過去１週間）の深夜時間帯の外気温度と給水温度の変化状況を検出し、該検出した外気温度と給水温度の変化状況から沸上運転の開始時点以降の外気温度と給水温度の変化状況を予測し、運転当日の沸き上げ負荷から必要加熱出力の配分パターンを算定する沸上制御手段５を備えている。 Hereinafter, an embodiment of an electric water heater of the present invention will be described with reference to the drawings.
As shown in FIG. 2, this electric water heater includes a cylindrical hot water storage tank 1, a water supply pipe 2 provided at the lower part of the hot water storage tank 1, a hot water supply pipe 3 provided at the upper part of the hot water storage tank 1, A heat pump 4 that heats the water in the hot water storage tank 1 is provided, and hot water boiled by midnight power is stored in the hot water storage tank 1.
And this electric water heater detects the change state of the outside air temperature and the water supply temperature in the midnight time zone for the past several days (for example, the past one week is not particularly limited), and the detected outside air temperature And a boiling control means 5 for predicting the change in the outside air temperature and the feed water temperature after the start of the boiling operation from the change in the feed water temperature and calculating the distribution pattern of the required heating output from the boiling load on the day of operation. ing.

沸上制御手段５は、深夜時間帯（例えば、深夜２３：００〜翌朝７：００）の外気温度が高い内に加熱出力を引き上げて沸き上げ、外気温度が低い朝方には加熱出力を引き下げてヒートポンプ４を運転する。
加熱出力の変更のための情報は、外気温度センサー（図示省略）により外気温度を、水温センサー（図示省略）により給水温度を検出することにより行う。
沸上制御手段５を内蔵するマイコンで、過去１週間分の深夜時間帯の外気温度と水温変化の変化状況から、運転開始時点以降の外気温度と水温の変化状況を予測し、運転当日の必要沸き上げ負荷から加熱出力の配分パターンを算定し、逐次最適な沸き上げ加熱出力に調節する。 The boiling-up control means 5 raises the heating output while the outside air temperature is high during midnight hours (for example, midnight 23:00 to 7:00 the next morning), and lowers the heating output in the morning when the outside air temperature is low. The heat pump 4 is operated.
Information for changing the heating output is obtained by detecting the outside air temperature with an outside air temperature sensor (not shown) and the feed water temperature with a water temperature sensor (not shown).
The microcomputer with built-in boiling control means 5 predicts the change in outside air temperature and water temperature from the start of operation based on the change in outside air temperature and water temperature during the past one week, and is necessary on the day of operation. The distribution pattern of the heating output is calculated from the boiling load and adjusted to the optimum boiling heating output sequentially.

この制御方法を用いて、貯湯タンク１からの放熱ロスを少なくさせておき、主に深夜時間帯の前半に貯湯タンク１の所定量（例えば、５０％以上）の沸き上げ湯量を確保し、その後、沸上運転の終わる時間を深夜時間帯の終了時に近づけ、朝方までに残りの沸き上げ湯量を補う。
その際に、深夜時間帯をフルに使って運転終了時間を深夜時間帯の終了時に近づけ、加熱出力をセーブする運転とする。
深夜時間帯の終了直前には貯湯タンク全量を沸き上げ状態にできるように、深夜時間帯の終了時間の間際に必要とする加熱出力で沸き上げを行い、貯湯タンク全量を沸き上げさせる。
この制御方法を既存の電気給湯機に適応し改善させるには、マイコンを有する基板の交換だけで、ＣＯＰの向上を可能としている。 By using this control method, heat loss from the hot water storage tank 1 is reduced, and a predetermined amount (for example, 50% or more) of boiling water in the hot water storage tank 1 is ensured mainly in the first half of the midnight time zone. Approximate the end of boiling operation at the end of midnight, and make up the remaining boiling water by the morning.
At that time, the operation is performed to save the heating output by making full use of the midnight time zone and bringing the operation end time closer to the end of the midnight time zone.
Just before the end of the midnight time zone, the entire hot water storage tank is heated to the boiling state, and the heating power required for the end time of the midnight time zone is heated to raise the entire hot water storage tank amount.
In order to adapt this control method to an existing electric water heater and improve it, it is possible to improve the COP only by replacing the substrate having the microcomputer.

ちなみに、深夜時間帯において外気温度を比較し、外気温度が高い深夜と低い朝方の温度差は、２００５年において１週間の平均を見ると、冬期（１月）が約１〜１．５℃程度、夏期（８月）が約１．５〜２℃程度であったので、外気温度が高い内に加熱出力を引き上げて沸き上げ、外気温度が低い朝方には加熱出力を引き下げて運転するようにすれば、ＣＯＰが向上する。
仮に外気温度差が２℃であれば、定格ＣＯＰのみで向上分を換算すると０．１６〜０．２２（４〜５％）となる。 By the way, comparing the outside temperature in the midnight time zone, the temperature difference between the midnight when the outside temperature is high and the low morning is about 1 to 1.5 degrees Celsius in winter (January) when looking at the average of one week in 2005 In summer (August), it was about 1.5 to 2 ° C, so the heating output was raised while the outside air temperature was high, and the heating output was lowered in the morning when the outside temperature was low. Then, COP is improved.
If the outside air temperature difference is 2 ° C., the improvement is converted to 0.16 to 0.22 (4 to 5%) only by the rated COP.

図１（ａ）に、沸上制御手段５による沸上運転の第１実施例を示す。
この制御方法は、深夜時間帯において、外気温度が比較的高い深夜の内に加熱出力を引き上げて沸き上げ（例４．５ｋＷ）、外気温度が低い朝方には加熱出力を引き下げて運転した場合である（例２．０ｋＷ）。
これにより、外気温度差を有効に利用し、ＣＯＰの向上につなげられる。 FIG. 1A shows a first embodiment of the boiling operation by the boiling control means 5.
This control method is a case where the heating output is raised and heated in the middle of the night when the outside air temperature is relatively high (eg, 4.5 kW) and the heating output is lowered in the morning when the outside air temperature is low. Yes (example 2.0 kW).
As a result, the outside air temperature difference is effectively used, and the COP can be improved.

図１（ｂ）に、沸上制御手段５による沸上運転の第１実施例を示す。
この制御方法では、加熱出力を引き下げた運転を経るに従って、貯湯タンク１の湯温が低下する場合、最終的に貯湯タンク全量を沸き上げ状態にできるように、深夜時間帯の終了時間間際に、必要とする強い加熱出力で沸き上げを行い、貯湯タンク全量を沸き上げるようにしている。 FIG. 1B shows a first embodiment of the boiling operation by the boiling control means 5.
In this control method, when the hot water temperature of the hot water storage tank 1 is lowered as the heating output is lowered, the entire amount of the hot water storage tank is finally brought to the boiling state so that the hot water tank is finally heated up. Boiling is performed with the required strong heating output, and the entire hot water storage tank is boiled.

図１（ｃ）に、沸上制御手段５による沸上運転の第３実施例を示す。
この制御方法は、電気事業連合会の通電制御型ヒートポンプ式給湯機認定要領に基づいて、通電制御型電気温水器割引の適用を可能とするための運転例である。
深夜時間帯の前半にシフト時間を設けられているので、沸き上げ開始時間が図１（ａ）や図１（ｂ）よりも遅れている分、外気温度差によるＣＯＰ向上の効果は少なくなるが、運転は十分対応可能である。 FIG. 1C shows a third embodiment of the boiling operation by the boiling control means 5.
This control method is an operation example for enabling application of an energization control type electric water heater discount based on the energization control type heat pump water heater certification procedure of the Federation of Electric Power Companies.
Since the shift time is provided in the first half of the midnight time zone, the effect of improving the COP due to the outside air temperature difference is reduced because the boiling start time is delayed from FIG. 1 (a) and FIG. 1 (b). The driving can be handled sufficiently.

図１（ｄ）に、沸上制御手段５による沸上運転の第４実施例を示す。
この制御方法は、同じく通電制御型電気温水器割引の適用を可能とするための運転例であり、なおかつ運転中に、外気温度と給水温度が、過去１週間分の外気温度と給水温度変化状況より低下する場合の運転例である。
４つの実施例の中で、外気温度差によるＣＯＰ向上の効果が最も少ないが、運転は十分対応可能である。 FIG. 1 (d) shows a fourth embodiment of the boiling operation by the boiling control means 5.
This control method is also an operation example for enabling the application of the electric current control type electric water heater discount, and during the operation, the outside air temperature and the feed water temperature are changed over the past one week. This is an operation example in the case of lowering.
Among the four examples, the effect of improving the COP due to the difference in the outside air temperature is the least, but the operation can be handled sufficiently.

かくして、本実施例の電気給湯機によれば、貯湯タンク１の水を加熱する加熱手段を備え、深夜電力により沸き上げた湯を貯湯タンク１に蓄えるようにした電気給湯機において、過去数日分の深夜時間帯の外気温度と給水温度の変化状況を検出し、該検出した外気温度と給水温度の変化状況から沸上運転の開始時点以降の外気温度と給水温度の変化状況を予測し、運転当日の沸き上げ負荷から必要加熱出力の配分パターンを算定する沸上制御手段５を備えることから、運転当日の沸き上げ負荷から加熱出力の配分パターンを算定し、深夜時間帯が終わる朝方に沸き上げが終わるように、逐次最適な沸き上げ加熱出力になるように加熱出力の増減制御を行うことができ、これにより、ＣＯＰの向上とランニングコストの低減を図ることができる。
この場合、沸上制御手段５が、外気温度が高い時は加熱出力を引き上げて沸上運転を行い、外気温度が低い時は加熱出力を引き下げて沸上運転を行うことにより、給水温度が高い内に加熱出力を引き上げて沸き上げ、給水温度が低い朝方には加熱出力を引き下げて運転することができ、これにより、ＣＯＰの向上とランニングコストの低減を図ることができる。 Thus, according to the electric water heater of the present embodiment, in the electric water heater provided with the heating means for heating the water in the hot water storage tank 1 and stored in the hot water storage tank 1 with the hot water boiled by midnight power in the past several days Detecting changes in the outside air temperature and the feed water temperature during the midnight time of minutes, predicting the change in the outside air temperature and the feed water temperature after the start of the boiling operation from the detected change in the outside air temperature and the feed water temperature, Since the heating control means 5 for calculating the distribution pattern of the required heating output from the heating load on the operation day is provided, the distribution pattern of the heating output is calculated from the heating load on the operation day, and it is boiled in the morning when the midnight time period ends. Heating output increase / decrease control can be performed so that the boiling heating output is optimally adjusted so that the heating is finished, thereby improving COP and reducing running costs.
In this case, when the outside air temperature is high, the boiling control means 5 raises the heating output to perform the boiling operation, and when the outside air temperature is low, the heating output is lowered to perform the boiling operation, so that the feed water temperature is high. In the morning when the feed water temperature is low, operation can be performed with the heating output lowered, thereby improving COP and reducing running costs.

また、沸上制御手段５が、深夜時間帯の終了直前に沸上不足分を沸き上げることにより、外気温度が低いそれ以外の時間帯の加熱出力を引き下げられる限り引き下げて運転することができる。   Further, the boiling-up control means 5 can raise the heating output in the other time zone where the outside air temperature is low by lowering the boiling shortage immediately before the end of the midnight time zone, so that the operation can be lowered.

また、貯湯タンク１を大気に開放することも可能であり、これにより、貯湯タンク１内に圧力を掛けないシステムにも適用することができる。
また、加熱手段としてヒートポンプ４を用いることにより、ヒータ加熱に比較して電気を節約することができる。 Further, the hot water storage tank 1 can be opened to the atmosphere, which can be applied to a system in which no pressure is applied to the hot water storage tank 1.
Moreover, by using the heat pump 4 as a heating means, electricity can be saved compared with heater heating.

以上、本発明の電気給湯機について、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、実施例に記載した構成を適宜組み合わせるなど、その趣旨を逸脱しない範囲において適宜その構成を変更することができる。   As mentioned above, although it demonstrated based on the Example about the electric water heater of this invention, this invention is not limited to the structure described in the said Example, The structure described in the Example is combined suitably, etc. The configuration can be changed as appropriate without departing from the spirit of the invention.

本発明の電気給湯機は、逐次最適な沸き上げ加熱出力になるように加熱出力の増減制御を行うことにより、ＣＯＰの向上とランニングコストの低減を図ることができるという特性を有していることから、省エネルギーで環境に配慮した電気給湯機として好適に用いることができる。   The electric water heater of the present invention has the characteristics that the COP can be improved and the running cost can be reduced by performing increase / decrease control of the heating output so as to obtain an optimal boiling heating output sequentially. Therefore, it can be suitably used as an energy-saving and environmentally friendly electric water heater.

（ａ）〜（ｄ）は、本発明の電気給湯機における沸上制御手段の運転実施例をそれぞれ示すグラフである。(A)-(d) is a graph which respectively shows the operation Example of the boiling-up control means in the electric water heater of this invention. 同電気給湯機の一実施例を示す概略図である。It is the schematic which shows one Example of the same electric water heater.

符号の説明Explanation of symbols

１ 貯湯タンク
２ 給水管
３ 給湯管
４ ヒートポンプ
５ 沸上制御手段 DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Water supply pipe 3 Hot water supply pipe 4 Heat pump 5 Boiling control means

Claims (5)

貯湯タンクの水を加熱する加熱手段を備え、深夜電力により沸き上げた湯を貯湯タンクに蓄えるようにした電気給湯機において、過去数日分の深夜時間帯の外気温度と給水温度の変化状況を検出し、該検出した外気温度と給水温度の変化状況から沸上運転の開始時点以降の外気温度と給水温度の変化状況を予測し、運転当日の沸き上げ負荷から必要加熱出力の配分パターンを算定する沸上制御手段を備えたことを特徴とする電気給湯機。   In an electric water heater equipped with a heating means to heat the water in the hot water storage tank and store the hot water boiled by midnight power in the hot water storage tank, the changes in the outside air temperature and the water supply temperature in the past midnight hours for the past several days Detects the change in the outside air temperature and the feed water temperature after the start of boiling operation from the detected change in the outside air temperature and the feed water temperature, and calculates the distribution pattern of the required heating output from the boiling load on the day of operation An electric water heater comprising a boiling-up control means. 沸上制御手段が、外気温度が高い時は加熱出力を引き上げて沸上運転を行い、外気温度が低い時は加熱出力を引き下げて沸上運転を行うことを特徴とする請求項１記載の電気給湯機。   2. The electricity according to claim 1, wherein the boiling control means raises the heating output when the outside air temperature is high and performs the boiling operation, and lowers the heating output when the outside air temperature is low. Water heater. 沸上制御手段が、深夜時間帯の終了直前に沸上不足分を沸き上げることを特徴とする請求項１又は２記載の電気給湯機。   The electric water heater according to claim 1 or 2, wherein the boiling-up control means boils up the shortage of boiling-up immediately before the end of the midnight time zone. 貯湯タンクを大気に開放するようにしたことを特徴とする請求項１、２又は３記載の電気給湯機。   4. The electric water heater according to claim 1, wherein the hot water storage tank is opened to the atmosphere. 加熱手段としてヒートポンプを用いたことを特徴とする請求項１、２、３又は４記載の電気給湯機。   The electric water heater according to claim 1, 2, 3, or 4, wherein a heat pump is used as the heating means.
JP2006179407A 2006-06-29 2006-06-29 Electric water heater Withdrawn JP2008008548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006179407A JP2008008548A (en) 2006-06-29 2006-06-29 Electric water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006179407A JP2008008548A (en) 2006-06-29 2006-06-29 Electric water heater

Publications (1)

Publication Number Publication Date
JP2008008548A true JP2008008548A (en) 2008-01-17

Family

ID=39066922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006179407A Withdrawn JP2008008548A (en) 2006-06-29 2006-06-29 Electric water heater

Country Status (1)

Country Link
JP (1) JP2008008548A (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010169350A (en) * 2009-01-26 2010-08-05 Mitsubishi Electric Corp Heat pump type water heater
US7798107B2 (en) 2007-11-14 2010-09-21 Honeywell International Inc. Temperature control system for a water heater
JP2010216684A (en) * 2009-03-13 2010-09-30 Toshiba Carrier Corp Hot water supply system
JP2011058702A (en) * 2009-09-09 2011-03-24 Corona Corp Hot water storage type hot water supply heater
US8245987B2 (en) 2009-12-18 2012-08-21 Honeywell International Inc. Mounting bracket for use with a water heater
US8322312B2 (en) 2007-06-19 2012-12-04 Honeywell International Inc. Water heater stacking detection and control
US8337081B1 (en) 2012-01-09 2012-12-25 Honeywell International Inc. Sensor assembly for mounting a temperature sensor to a tank
US8485138B2 (en) 2008-11-13 2013-07-16 Honeywell International Inc. Water heater with temporary capacity increase
US8770152B2 (en) 2008-10-21 2014-07-08 Honeywell International Inc. Water Heater with partially thermally isolated temperature sensor
JP2014240711A (en) * 2013-06-11 2014-12-25 三菱電機株式会社 Storage water heater
JP2015121403A (en) * 2015-04-02 2015-07-02 ダイキン工業株式会社 Water heater
US9249986B2 (en) 2009-12-18 2016-02-02 Honeywell International Inc. Mounting bracket for use with a water heater
US9249987B2 (en) 2013-01-30 2016-02-02 Honeywell International Inc. Mounting bracket for use with a water heater
JP2016050751A (en) * 2014-09-02 2016-04-11 株式会社デンソー Heat pump type water heater
CN106440421A (en) * 2016-10-20 2017-02-22 吕子含 Comprehensive constant-temperature control method for electric water heater and solar water heater
US9799201B2 (en) 2015-03-05 2017-10-24 Honeywell International Inc. Water heater leak detection system
JP2017223421A (en) * 2016-06-17 2017-12-21 リンナイ株式会社 Heat medium heating device
US9885484B2 (en) 2013-01-23 2018-02-06 Honeywell International Inc. Multi-tank water heater systems
US9920930B2 (en) 2015-04-17 2018-03-20 Honeywell International Inc. Thermopile assembly with heat sink
US10088852B2 (en) 2013-01-23 2018-10-02 Honeywell International Inc. Multi-tank water heater systems
US10119726B2 (en) 2016-10-06 2018-11-06 Honeywell International Inc. Water heater status monitoring system
US10132510B2 (en) 2015-12-09 2018-11-20 Honeywell International Inc. System and approach for water heater comfort and efficiency improvement
US10670302B2 (en) 2014-03-25 2020-06-02 Ademco Inc. Pilot light control for an appliance
US10731895B2 (en) 2018-01-04 2020-08-04 Ademco Inc. Mounting adaptor for mounting a sensor assembly to a water heater tank
JP2020200996A (en) * 2019-06-11 2020-12-17 リンナイ株式会社 Water heater
US10969143B2 (en) 2019-06-06 2021-04-06 Ademco Inc. Method for detecting a non-closing water heater main gas valve
US11592852B2 (en) 2014-03-25 2023-02-28 Ademco Inc. System for communication, optimization and demand control for an appliance

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8875664B2 (en) 2007-06-19 2014-11-04 Honeywell International Inc. Water heater stacking detection and control
US8322312B2 (en) 2007-06-19 2012-12-04 Honeywell International Inc. Water heater stacking detection and control
US7798107B2 (en) 2007-11-14 2010-09-21 Honeywell International Inc. Temperature control system for a water heater
US8770152B2 (en) 2008-10-21 2014-07-08 Honeywell International Inc. Water Heater with partially thermally isolated temperature sensor
US8485138B2 (en) 2008-11-13 2013-07-16 Honeywell International Inc. Water heater with temporary capacity increase
JP2010169350A (en) * 2009-01-26 2010-08-05 Mitsubishi Electric Corp Heat pump type water heater
JP2010216684A (en) * 2009-03-13 2010-09-30 Toshiba Carrier Corp Hot water supply system
JP2011058702A (en) * 2009-09-09 2011-03-24 Corona Corp Hot water storage type hot water supply heater
US8245987B2 (en) 2009-12-18 2012-08-21 Honeywell International Inc. Mounting bracket for use with a water heater
US9249986B2 (en) 2009-12-18 2016-02-02 Honeywell International Inc. Mounting bracket for use with a water heater
US8337081B1 (en) 2012-01-09 2012-12-25 Honeywell International Inc. Sensor assembly for mounting a temperature sensor to a tank
US9885484B2 (en) 2013-01-23 2018-02-06 Honeywell International Inc. Multi-tank water heater systems
US10088852B2 (en) 2013-01-23 2018-10-02 Honeywell International Inc. Multi-tank water heater systems
US9249987B2 (en) 2013-01-30 2016-02-02 Honeywell International Inc. Mounting bracket for use with a water heater
JP2014240711A (en) * 2013-06-11 2014-12-25 三菱電機株式会社 Storage water heater
US10670302B2 (en) 2014-03-25 2020-06-02 Ademco Inc. Pilot light control for an appliance
US11592852B2 (en) 2014-03-25 2023-02-28 Ademco Inc. System for communication, optimization and demand control for an appliance
JP2016050751A (en) * 2014-09-02 2016-04-11 株式会社デンソー Heat pump type water heater
US10692351B2 (en) 2015-03-05 2020-06-23 Ademco Inc. Water heater leak detection system
US9799201B2 (en) 2015-03-05 2017-10-24 Honeywell International Inc. Water heater leak detection system
US10049555B2 (en) 2015-03-05 2018-08-14 Honeywell International Inc. Water heater leak detection system
JP2015121403A (en) * 2015-04-02 2015-07-02 ダイキン工業株式会社 Water heater
US9920930B2 (en) 2015-04-17 2018-03-20 Honeywell International Inc. Thermopile assembly with heat sink
US10738998B2 (en) 2015-04-17 2020-08-11 Ademco Inc. Thermophile assembly with heat sink
US10132510B2 (en) 2015-12-09 2018-11-20 Honeywell International Inc. System and approach for water heater comfort and efficiency improvement
US10989421B2 (en) 2015-12-09 2021-04-27 Ademco Inc. System and approach for water heater comfort and efficiency improvement
JP2017223421A (en) * 2016-06-17 2017-12-21 リンナイ株式会社 Heat medium heating device
US10119726B2 (en) 2016-10-06 2018-11-06 Honeywell International Inc. Water heater status monitoring system
CN106440421A (en) * 2016-10-20 2017-02-22 吕子含 Comprehensive constant-temperature control method for electric water heater and solar water heater
US10731895B2 (en) 2018-01-04 2020-08-04 Ademco Inc. Mounting adaptor for mounting a sensor assembly to a water heater tank
US10969143B2 (en) 2019-06-06 2021-04-06 Ademco Inc. Method for detecting a non-closing water heater main gas valve
JP2020200996A (en) * 2019-06-11 2020-12-17 リンナイ株式会社 Water heater
JP7236333B2 (en) 2019-06-11 2023-03-09 リンナイ株式会社 Water heater

Similar Documents

Publication Publication Date Title
JP2008008548A (en) Electric water heater
JP6089781B2 (en) Hot water storage water heater and solar system equipped with the hot water heater
KR101621168B1 (en) Hot water supply system
CN105135791A (en) Defrosting system and defrosting method for air cooling refrigerator and air cooling refrigerator
EP2484987B1 (en) Heat pump hot-water supply system
JP5343867B2 (en) Hybrid water heater
JP2007078200A (en) Heat pump water heater
JP4837453B2 (en) Hot water storage hot water supply system
JP3968643B2 (en) Solar water heater
JP2015140954A (en) heat pump hot water supply system
JP2005345099A (en) Heat pump hot-water supply device
JP2004347171A (en) Heat pump water heater
JP4549234B2 (en) Cogeneration system
JPH11148731A (en) Hot-water storage type water heater
JP5498130B2 (en) Boiling set temperature determination method of heat pump hot water storage type hot water supply and heating system
JP3915821B2 (en) Heat pump water heater
JP2019160639A (en) Fuel cell system
JP2013042838A (en) Electric kettle
JPS60205149A (en) Heat pump type water heater
JP2013015244A (en) System and method for preventing and controlling freeze of piping
JP2001194008A (en) Electric water heater and operating method of the same
JP2004317025A (en) Heat pump water heater and its energizing control method
JP2009250465A (en) Heat pump-type water heater
JP6751619B2 (en) Hot water supply system
JP5313087B2 (en) Hot water storage hot water heater

Legal Events

Date Code Title Description
A300 Application deemed to be withdrawn because no request for examination was validly filed

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20090901